TY  - JOUR
A1  - Kohler, Ulrich
T1  - Possible uses of nonprobability sampling for the social sciences
JF  - Survey methods : insights from the field
N2  - This paper compares the usability of data stemming from probability sampling with data stemming from nonprobability sampling. It develops six research scenarios that differ in their research goals and assumptions about the data generating process. It is shown that inferences from data stemming from nonprobability sampling implies demanding assumptions on the homogeneity of the units being studied. Researchers who are not willing to pose these assumptions are generally better off using data from probability sampling, regardless of the amount of nonresponse. However, even in cases when data from probability sampling is clearly advertised, data stemming from nonprobability sampling may contribute to the cumulative scientific endeavour of pinpointing a plausible interval for the parameter of interest.
KW  - Causal Inference
KW  - Descriptive Inference
KW  - Fit-for-purpose
KW  - Interactions
KW  - Nonprobability sample
KW  - PATE
KW  - Probability sample
Y1  - 2019
U6  - https://doi.org/10.13094/SMIF-2019-00014
SN  - 2296-4754
PB  - Swiss Found. for Research in Social Sciences
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Helbig, Marcel
A1  - Baier, Tina
A1  - Kroth, Anna
T1  - The Effect of Tuition Fees on Enrollment in Higher Education in Germany.
 Evidence from a Natural Experiment
JF  - ZEITSCHRIFT FUR SOZIOLOGIE
N2  - In this paper we estimate the effect of tuition fees on the intentions of high school graduates in Germany to enroll in higher education. Based on representative survey data collected by the HIS institute between 2002 and 2008, we are able to analyze the effect of tuition fees using a quasi-experimental design. We take advantage of the variation between the German federal states in the introduction of tuition fees to examine the impact of tuition fees and employ a difference-in-differences estimation strategy. We do not find empirical evidence that tuition fees lower the intentions to enroll in higher education among high school graduates. This holds true for both the whole sample and for different subgroups, such as women or high school graduates with no family background of higher education.
KW  - Social Inequality
KW  - Educational Inequality
KW  - Tuition Fees
KW  - Transition to Higher Education
KW  - Natural Experiment
KW  - Difference-in-Differences
KW  - Causal Inference
KW  - HIS School Leaver Survey
Y1  - 2012
SN  - 0340-1804
VL  - 41
IS  - 3
SP  - 227
EP  - 246
PB  - LUCIUS LUCIUS VERLAG MBH
CY  - STUTTGART
ER  -